CNC machine produced 6061-T64 types adjusting: externally adjustable rebound, compressive damping, preload and air pressure of the spareAxle diameter: 14mmDistance: 270, 280, 290, 300 and 370mmTravel: 50 to 80mmSpring rate: 1, 200/800/750/650lbs/INFit for dirt/Pit Bike ATV scooter motocross...